Implements comprehensive dice rolling system for gameplay:
## New Features
- `/roll` and `!roll` commands for XdY dice notation with multiple roll support
- `/ab` and `!atbat` commands for baseball at-bat dice shortcuts (1d6;2d6;1d20)
- `/fielding` and `!f` commands for Super Advanced fielding with full position charts
## Technical Implementation
- Complete dice command package in commands/dice/
- Full range and error charts for all 8 defensive positions (1B,2B,3B,SS,LF,RF,CF,C)
- Pre-populated position choices for user-friendly slash command interface
- Backwards compatibility with prefix commands (!roll, !r, !dice, !ab, !atbat, !f, !fielding, !saf)
- Type-safe implementation following "Raise or Return" pattern
## Testing & Quality
- 30 comprehensive tests with 100% pass rate
- Complete test coverage for all dice functionality, parsing, validation, and error handling
- Integration with bot.py command loading system
- Maintainable data structures replacing verbose original implementation
## User Experience
- Consistent embed formatting across all commands
- Detailed fielding results with range and error analysis
- Support for complex dice combinations and multiple roll formats
- Clear error messages for invalid inputs
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
